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Hexagonal Tungsten Trioxide 443

Hexagonal tungsten trioxide has prospect application in cathode material and chargeable lithium ion battery. Hexagonal WO3 is metastable state phase. Its producing method is mild. It can be made by hydrothermal method, using sodium tungstate and hydrochloric acid as raw material, and then adding like potassium oxalate and potassium sulphate as additives. How about hexagonal tungsten oxide structure? Hexagonal WO3 is focused due to its special hexagonal path, many metal ion can insert to this path which forms into hexagonal…

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Orthorhombic Phase Tungsten Trioxide 464

Orthorhombic phase tungsten trioxide, i.e. tungsten trioxide with orthorhombic phase (WO3), can be prepared by hydrothermal synthesis (using different precursors and regulators, under the conditions of suitable temperature, concentration and pH). According to simple chemical stoichiometric ratio, W:O is 1:3, its ideal crystalline structure can be seen as W atom in the center and the other six surrounded by it. Tungsten oxide octahedron (WO6) is joined by the same dome, there are many vacancies between octahedron and forms many paths.…

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Tungsten Trioxide 438

Tungsten trioxide, also known as WO3, tungsten oxide or tungstic anhydride, is mainly applied to produce tungsten powder and tungsten carbide powder. And then the two kind of powder are used to produce all kinds of pure tungsten products (such as tungsten wires, tungsten electrodes and tungsten rods, etc.) and tungsten carbide products (such as tungsten carbide molds and tungsten carbide knives, etc.) respectively. WO3 can also be used as a kind of pigment (for yellow ceramics) or as a…

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Tungsten Dioxide 823

Tungsten dioxide is also known as brown tungsten oxide, which is named as it appears as brown monoclinic system crystalline powder. It is the chemical compound with the formula WO2, a density of 10.82~11.05g/cm3. CAS No. is 12036-22-5. WO2 is soluble in concentrated sulfuric acid, but is insoluble in water, hydrochloric acid, dilute sulfuric acid and alkali solution. Because WO2 is unstable and easily oxidized to tungsten trioxide in the air, it is usually used to prepare tungsten trioxide and…

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Tungsten Oxide 460

Tungsten oxide, a kind of yellow orthorhombic crystal, is insoluble in water and acid (except HF), but, slowly dissolves in concentrated alkali solution. Tungsten oxide, a kind of tungstic anhydride, is obtained as an intermediate in the recovery of tungsten from its minerals. It is mainly applied in manufacturing tungsten, tungstates, tungsten alloys. There are four types of tungsten oxide: 1. Yellow tungsten oxide, short for YTO, formula is WO3; 2. Blue tungsten oxide, short for BTO, formula is WO2.9…

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Composite Titanium Tungsten Powder 402

The composite titanium tungsten powder has high adsorption capacity, stable chemical properties, high catalytic activity and long service life. It is mainly used in the manufacture of SCR denitration catalyst. Characteristic The composite titanium tungsten powder has a large specific surface area, strong adsorption capacity, stable chemical properties, high catalytic activity, good sulfur resistance and long service life. It is the carrier material of SCR denitrification catalyst. Applications Composite titanium tungsten powder is mainly used for manufacture of SCR denitration…

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Titanium Tungsten Silicon Powder 414

Titanium tungsten silicon powder has the advantages of strong adsorption capacity, stable chemical properties and high catalytic activity. It is mainly used in the manufacture of SCR denitrification catalyst, and is the raw material for preparing V2O5-WO3/TiO2 catalyst. Indicators of production BET method specific surface area: 105 plus or minus 10m2/g. Grain size: 10~20nm. Agglomerate particle size D50:1.1 + 0.3um. Rutile content: less than 0.5%. PH value (10% water suspension emulsion) : 1.2~3.0. Burning loss: less than 5.0%. TiO2 content:…

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Titanium Tungsten Powder for Catalyst 437

Titanium tungsten powder for catalyst has the characteristics of typical porous structure and high thermal stability. It is the ideal catalyst carrier material and the raw material for industrial production of v2o5-wo3 /TiO2 catalyst. Appearance: white powder, insoluble in water. Crystal structure: sharp titanium type. Crystal size (XRD) : 15~25nm. Particle size (laser diffraction method): D50%=0.8~1.5um. Applications Selective catalytic reduction (SCR) technology is widely used in the removal of nitrogen oxides in the flue gas of coal-fired power plants due…

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Anatase Titanium Tungsten Powder 383

The main ingredient of anatase titanium tungsten powder is titanium dioxide (TiO2) is and tungsten trioxide (WO3). It is one of the three main crystal types of titanium tungsten powder in nature. It has a relatively stable properties and good electronic effect, especially suitable for as a carrier of catalyst. Applications Anatase titanium tungsten powder is used as a carrier to facilitate the process of denitrification of catalyst. Due to the existence of SO2 and O2, the anatase titanium tungsten…

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Titanium Tungsten Silicon Powder for Catalyst 402

The titanium tungsten silicon powder for catalyst was used as the carrier of the catalyst, and the preparation step was to preparation of metatitanic acid, preparation of composite particles, and post-treatment. Preparation Steps: Preparation of metatitanic acid: adding oxygen titanium sulfate solution, dispersant, respectively, constant temperature in the reaction kettle, thermostatic mixing and drops of carbonate aqueous solution, adjust pH value to the appropriate scope, continue to stir for solids, washed, dry paint solids and partial titanate particles; Preparation of…

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